• East Asian mathematical journal
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• 제37권2호
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• pp.265-288
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• 2021

In the 2015 revised mathematics curriculum, the system of equations is first introduced in 'Variables and Expressions' of [Middle School Grades 1-3]. Then, It is constructed that after learning the linear function in 'Functions', the relationship between the graphs of two linear functions and the systems of linear equations are learned so that students could improve the geometric representation of the systems of equations. However, in of Elective-Centered Curriculum Common Courses, Instruction is limited to algebraic manipulation when teaching and learning systems of quadratic equations. This paper presented the teaching and learning method that can improve students' mathematical connection through various representations by providing geometric representations in parallel using GeoGebra, a mathematics learning software, with algebraic solutions in the teaching and learning situation of simultaneous quadratic equations.

• 대한수학회논문집
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• 제31권4호
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• pp.819-825
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• 2016

In this paper, we establish approximation of bi-quadratic functional equations in Lipschitz spaces.

• Korean Journal of Mathematics
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• 제13권2호
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• pp.275-284
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• 2005

In the present paper we shall introduce several operators on the reproducing kernel spaces. And using them we shall find a solution of an infinite system of quadratic equations (1.1). In particular we shall convert problem for finding an approximate solution of infinite system of quadratic equations into problem for minimizing nonnegative biquadratic polynomial.

• Kyungpook Mathematical Journal
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• 제60권1호
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• pp.133-144
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• 2020

We will prove the generalized Hyers-Ulam stability of cubic-quadratic-additive type functional equations and general cubic functional equations whose solutions are cubic-quadratic-additive mappings and general cubic mappings, respectively.

• 충청수학회지
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• 제20권4호
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• pp.515-523
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• 2007

In this paper, we investigate the Hyers-Ulam-Rassias stability of generalized Jensen type quadratic functional equations in Banach spaces.

• 충청수학회지
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• 제22권1호
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• pp.31-37
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• 2009

In this paper, we obtain the generalized Hyers-Ulam stability of a functional equation and a system of functional equations on Jensen-quadratic mappings.

• 충청수학회지
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• 제23권3호
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• pp.411-424
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• 2010

In this paper we consider a generalized form of quadratic functional equations and establish new theorems about the generalized Hyers-Ulam stability of the generalized form of quadratic equations in fuzzy normed spaces.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제37권3호
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• pp.545-567
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• 2023

본 연구는 이차방정식과 이차함수 단원을 중심으로 수학 문제 해결에 효과적인 ChatGPT의 프롬프트를 고찰하는 연구로 '역할-규칙-예제풀이-문제-과정'으로 이어지는 구조화된 프롬프트를 설계하였다. 본 연구에서는 GPT4, 울프람 플러그인, Advanced Data Analysis를 결합한 인공지능 모델을 활용하였으며, 계산 오류를 줄이기 위해 울프람 플러그인을 주요 연산의 도구로 사용하였다. 9종의 고등학교 수학 교과서의 이차방정식과 이차함수 단원 문제를 구조화된 프롬프트의 형태로 입력하였을 때 ChatGPT의 답변에 대한 정답률은 91%로, 제로샷 프롬프트 대비 높은 성과를 보였다. 이를 통해 수학 문제 해결에 효과적인 구조화된 프롬프트를 확인할 수 있었다. 본 연구에서 설계한 구조화된 프롬프트는 개별화 교육 및 맞춤형 교육을 위한 지능형 정보시스템 구축에 기여할 수 있을 것이다.

• 충청수학회지
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• 제27권1호
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• pp.123-132
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• 2014

In this paper, we investigate the following form of a certain class of quadratic functional equations and its fuzzy stability. $$f(kx+y)+f(kx-y)=f(x+y)+f(x-y)-2(1-k^2)f(x)$$ where k is a fixed rational number with $k{\neq}1$, -1, 0.

• 충청수학회지
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• 제28권2호
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• pp.321-330
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• 2015

In this paper, we prove the generalized Hyers-Ulam stability for the following additive-quadratic functional equation f(2x + y) + f(2x - y) = f(x + y) + f(x - y) + 4f(x) + 2f(-x) in modular spaces by using a fixed point theorem for modular spaces.